25 realistic Passenger Transport practice questions for Idaho CDL applicants. Required for: Drivers of vehicles designed for 16+ passengers. Official test: 20 questions, 16 correct to pass.
Question 1 of 25 · Mountain Driving
What's the safest way to handle a bus on a steep downgrade?
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A.
Use lower gears and engine braking
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B.
Coast in neutral
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C.
Brake hard
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D.
Use parking brake
Correct answer: A.
Lower gears and engine braking; service brakes only intermittently.
Question 2 of 25 · Operation
When is it acceptable to refuel a bus with passengers aboard?
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A.
Never — passengers must be off the bus during refueling
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B.
Always
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C.
Only when bus is in motion
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D.
Only at night
Correct answer: A.
Never refuel with passengers on board; require everyone to disembark.
Question 3 of 25 · CDL Rules
What's the maximum number of standees allowed on a bus?
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A.
Same as seated passengers
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B.
No standees allowed in some buses; check the rules for your vehicle
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C.
Always 10
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D.
Unlimited
Correct answer: B.
Rules vary; some buses allow standees, others don't. Follow your vehicle's rules.
Question 4 of 25 · Operation
What is "brake-door interlock"?
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A.
A system that prevents the bus from moving when the door is open
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B.
A safety lock on the brakes
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C.
A type of door
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D.
A driver fatigue device
Correct answer: A.
Brake-door interlock keeps the brakes applied while the door is open.
Question 5 of 25 · Adverse Conditions
What's the safest way to handle a bus in fog?
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A.
Use low beams and slow down
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B.
Use high beams
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C.
Speed up to escape fog
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D.
Stop on the highway
Correct answer: A.
Slow down and use low beams; high beams reflect off fog.
Question 6 of 25 · Hours of Service
What's the legal limit for hours of service for bus drivers?
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A.
10 hours of driving after 8 consecutive hours off duty
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B.
12 hours of driving with 8 hours off
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C.
15 hours of driving
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D.
No limit
Correct answer: A.
Bus drivers typically follow 10/8/15 rules: 10 driving, 8 off, 15 on duty.
Question 7 of 25 · Rail Crossings
When approaching an unmarked railroad crossing with a bus, you should:
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A.
Stop within 15-50 feet of nearest rail and look and listen
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B.
Drive across without stopping
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C.
Speed up
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D.
Sound the horn
Correct answer: A.
Stop and check before crossing — required for buses by federal rule.
Question 8 of 25 · Following Distance
What's the safest way to handle a bus in heavy traffic?
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A.
Maintain extra following distance and signal early
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B.
Speed up to keep with traffic
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C.
Drive aggressively
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D.
Use the shoulder
Correct answer: A.
Buses need extra space and clear signaling in heavy traffic.
Question 9 of 25 · CDL Rules
Passenger transport drivers must:
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A.
Have a current Medical Examiner's Certificate
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B.
Have a CDL with Passenger endorsement
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C.
Pass a knowledge and skills test
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D.
All of the above
Correct answer: D.
Passenger drivers need a CDL with P endorsement, valid medical certificate, and skills test.
Question 10 of 25 · Boarding
How should drivers handle wheelchair-bound passengers?
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A.
Use the wheelchair lift safely and secure the wheelchair properly
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B.
Refuse to transport them
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C.
Use the lift quickly
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D.
Don't secure the wheelchair
Correct answer: A.
Use the lift correctly and secure the wheelchair before driving.
Question 11 of 25 · Inspection
What is "after-trip inspection"?
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A.
An inspection done after the trip ends to identify defects and prepare for next trip
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B.
A passenger survey
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C.
A fuel check
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D.
A maintenance schedule
Correct answer: A.
After-trip inspections find defects so the bus is ready for the next driver.
Question 12 of 25 · Operation
How often should a bus driver check passenger safety?
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A.
Continuously throughout the trip
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B.
Only at the start
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C.
Only at stops
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D.
Once per hour
Correct answer: A.
Stay aware of passenger conduct, baggage, and safety throughout the trip.
Question 13 of 25 · Adverse Conditions
What's the safest way to handle a bus on a wet road?
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A.
Reduce speed and increase following distance
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B.
Drive at posted speed
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C.
Use engine retarder constantly
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D.
Lock the brakes
Correct answer: A.
Wet roads need slower speeds and longer following distances.
Question 14 of 25 · Hazard Awareness
How should drivers handle blind spots on a bus?
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A.
Use mirrors carefully and check before changing lanes
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B.
Ignore blind spots
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C.
Drive in the middle lane
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D.
Use only the driver's side mirror
Correct answer: A.
Buses have large blind spots; check both mirrors and look over your shoulder.
Question 15 of 25 · Adverse Conditions
What's the safest way to handle a bus on icy roads?
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A.
Slow down and increase following distance
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B.
Drive at posted speed
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C.
Use chains
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D.
All of the above
Correct answer: D.
Reduced speed, more space, and chains where required minimize ice risk.
Question 16 of 25 · CDL Rules
What's the maximum weight a bus driver can transport without special permits?
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A.
Limits depend on vehicle and state regulations
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B.
Always 10,000 lbs
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C.
No limit
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D.
Always 50,000 lbs
Correct answer: A.
Weight limits depend on vehicle type and state law.
Question 17 of 25 · Emergencies
How should a driver handle a fire on a bus?
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A.
Pull over, evacuate passengers, attempt to extinguish
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B.
Continue to destination
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C.
Tell passengers to put it out
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D.
Drive faster
Correct answer: A.
Stop safely, evacuate, and try to put out the fire if it is safe.
Question 18 of 25 · Operation
What's the role of the driver in passenger safety?
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A.
To maintain a safe environment and respond to emergencies
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B.
To collect fares only
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C.
To drive without regard to passengers
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D.
To enforce the law
Correct answer: A.
Drivers maintain safety, communicate, and respond to emergencies.
Question 19 of 25 · Inspection
What's the importance of the driver's pre-trip inspection?
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A.
To identify defects before driving
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B.
To ensure passenger safety
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C.
To comply with regulations
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D.
All of the above
Correct answer: D.
Pre-trip inspection finds defects, ensures safety, and meets legal requirements.
Question 20 of 25 · Emergencies
What should a driver do if a passenger becomes ill?
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A.
Stop in a safe area and call for help
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B.
Continue to destination
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C.
Tell them to get off
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D.
Ignore them
Correct answer: A.
Stop safely, assess the situation, and contact emergency services if needed.
Question 21 of 25 · Emergencies
What's the safest way to handle a bus in a crash?
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A.
Evacuate passengers safely and call emergency services
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B.
Continue driving
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C.
Tell passengers to stay seated
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D.
Drive away from the scene
Correct answer: A.
Evacuate to a safe area and call for help; never leave the scene.
Question 22 of 25 · Adverse Conditions
How should drivers handle a bus in heavy wind?
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A.
Slow down and grip the wheel firmly
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B.
Speed up to clear
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C.
Lock the brakes
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D.
Use engine retarder
Correct answer: A.
Buses have large surface area; slow down and steer firmly in wind.
Question 23 of 25 · Rail Crossings
What does the driver do at a railroad crossing?
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A.
Stop within 15-50 feet of the nearest rail and look and listen
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B.
Speed up to clear quickly
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C.
Stop on the tracks
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D.
Drive across without stopping
Correct answer: A.
Stop 15 to 50 feet from nearest rail. Open the door and listen.
Question 24 of 25 · Operation
How should drivers handle passengers with special needs?
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A.
Provide assistance and ensure their safety
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B.
Refuse to transport them
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C.
Treat them like other passengers without help
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D.
Charge extra
Correct answer: A.
Provide appropriate assistance; passenger safety always comes first.
Question 25 of 25 · Boarding
When passengers are exiting the bus:
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A.
Wait until they are clear before moving
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B.
Move slowly while they exit
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C.
Close the door immediately
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D.
Drive away
Correct answer: A.
Wait until passengers are clear of the door before moving.
About the Passenger Transport Test
The Passenger Transport test covers the safe operation of buses and other vehicles designed to transport 16 or more passengers including the driver. Topics include vehicle inspection, loading and trip start, on the road, after-trip vehicle inspection, prohibited practices, and use of brake-door interlocks.
The Idaho Transportation Department — Driver Services administers this knowledge test as part of its commercial driver license program. To earn the Passenger Endorsement (P) on your Idaho CDL, you need to score at least 16 out of 20 on the official version.
Topics covered on this practice test
- Operation: 5 questions
- Adverse Conditions: 4 questions
- CDL Rules: 3 questions
- Emergencies: 3 questions
- Rail Crossings: 2 questions
- Boarding: 2 questions
- Inspection: 2 questions
- Mountain Driving: 1 question
- Hours of Service: 1 question
- Following Distance: 1 question
- Hazard Awareness: 1 question
How to use this practice test
- Read each question carefully. CDL questions are written precisely — small wording differences matter.
- Click "Show Answers & Explanations" only after answering every question. Don't peek mid-test.
- Read the explanation for every question, even ones you got right. The reasoning is more important than the answer.
- Repeat the test until you score 100%. The questions are deterministic per state, so you can track your improvement over multiple sessions.
- Move on to the other endorsement tests for Idaho until you're ready for the official exam.
Tips specific to the Passenger Transport test
Passenger Transport questions cover bus inspection, loading and trip start, on-road driving, after-trip inspection, and the brake-door interlock. The official test is 20 questions; pay close attention to railroad crossing procedures and the prohibited practices list.